<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>记事本增加</title>
    <link rel="stylesheet" href="index.css">
</head>

<body>
    <!-- 主体区域 -->
    <section id="todoapp">
        <!-- 输入框 -->
        <header class="header">
            <h2>小黑记事本</h2>
            <input v-model="inputValue" @keyup.enter="add" autofocus="autofocus" autocomplete="off" placeholder="请输入任务"
                class="new-todo">
        </header>
        <!-- 列表区域 -->
        <section class="main">
            <ul class="todo-list">
                <li class="todo" v-for="(item,index) in list">
                    <div class="view">
                        <span class="index">{{ index+1 }}.</span>
                        <label>{{ item }}</label>
                        <button class="destroy" @click="remove(index)"></button>
                    </div>
                </li>
            </ul>
        </section>
        <!-- 统计和清空 -->
        <footer class="footer"> <span class="todo-count" v-if="list.length!=0">
                <strong>{{list.length}}</strong>
                itemsleft</span>
            <button v-show="list.length!=0" class="clear-completed" @click="clear">
                Clear
            </button>
        </footer>
    </section>
    <!-- 底部 -->
    <footer class="info">

    </footer>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el: "#todoapp",
            data: {
                list: ["吃饭", "跑步", "打游戏", "看电影"],
                inputValue: "这包辣条好辣啊!"
            },
            methods: {
                add: function () {
                    this.list.push(this.inputValue);
                },
                remove: function (index) {
                    console.log("清除");
                    console.log(index);
                    this.list.splice(index, 1);
                },
                clear: function () {
                    this.list = [];
                }
            }
        })
    </script>
</body>

</html>